Adil GÜNER, Vehbi ESER - optima

Posters
GENETIC VARIATION AND PHYLOGEOGRAPHY IN THE BARBARY
THUJA (TETRACLINIS ARTICULATA (VAHL) MASTERS)
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Anass TERRAB, Juan Luis GARCIA-CASTAÑO, Laura NAVARRO, María Josefa DIEZ
Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apdo. 1095,
41080-Sevilla, Spain; anass@us.es
We investigated patterns of genetic variation within and among Tetraclinis articulata (Vahl)
Masters populations in the western Mediterranean Basin. We genotyped 214 individuals using
Amplified Fragment Length Polymorphisms (AFLP) from natural populations throughout the
whole distribution range of this species (Algeria, Malta, Morocco and Spain). The two AFLP
primer combinations used generated 700 unambiguously scorable DNA fragments. Different
analyses such as the Principal Coordinate Analysis (PCoA), the AMOVA, the Neighbor-
Joining (NJ), and the Bayesian clustering revealed a poor structure among the populations
analyzed. Our results document a low effect of the Strait of Gibraltar on Tetraclinis articulata
differentiation as populations from S Iberian Peninsula were, genetically, very close to those
from N Morocco (Rif Mountains). This is interpreted in the context of postglacial history of
the region. Also, the human impact of this species has been discussed.
Keywords: AFLP, Tetraclinis articulata, W Mediterranean,
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